/* =========================================================
   VRINDAVAN TECHNO PROJECTS — Style System
   Concept: steel enclosure + copper busbar + hazard amber
   Fonts: Big Shoulders Display (headlines) / IBM Plex Sans (body)
   ========================================================= */

:root{
  --bg:#F4F5F7;
  --bg-alt:#E9ECEF;
  --panel:#FFFFFF;
  --ink:#12181F;
  --ink-soft:#4A5568;
  --graphite:#12181F;
  --graphite-alt:#1B232E;
  --line:#D7DBE1;
  --line-dark:#2B3540;
  --copper:#B5651D;
  --copper-dark:#8F4E16;
  --copper-light:#D98A46;
  --copper-glow:rgba(181,101,29,.35);
  --steel:#29435C;
  --steel-light:#3E6088;
  --steel-dark:#1B2E40;
  --amber:#E2A73B;
  --white:#FFFFFF;

  --font-display:'Big Shoulders Display', sans-serif;
  --font-body:'IBM Plex Sans', sans-serif;

  --maxw:1180px;
  --radius:6px;
  --shadow-soft:0 12px 28px rgba(18,24,31,.14);
}

*,*::before,*::after{box-sizing:border-box;}
html{scroll-behavior:smooth;}
:focus-visible{outline:3px solid var(--copper-light);outline-offset:2px;}
@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto;}
  *,*::before,*::after{animation-duration:.001ms !important;transition-duration:.001ms !important;}
}
body{
  margin:0;
  font-family:var(--font-body);
  color:var(--ink);
  background:var(--bg);
  line-height:1.6;
  font-size:16px;
}
img{max-width:100%;display:block;}
a{color:inherit;text-decoration:none;}
ul{margin:0;padding:0;list-style:none;}
h1,h2,h3,h4{
  font-family:var(--font-display);
  font-weight:700;
  line-height:1.05;
  margin:0 0 .5em;
  letter-spacing:.2px;
}
h1{font-size:clamp(2.4rem,5vw,4.2rem);}
h2{font-size:clamp(1.9rem,3.4vw,2.8rem);}
h3{font-size:1.35rem;}
p{margin:0 0 1em;max-width:65ch;color:var(--ink-soft);}
.container{max-width:var(--maxw);margin:0 auto;padding:0 24px;}
.section{padding:88px 0;}
.section-tight{padding:56px 0;}
.section-dark{background:var(--graphite);color:#EDEFF2;}
.section-dark p{color:#B7BFC9;}
.section-dark h2,.section-dark h3{color:#fff;}
.bg-alt{background:var(--bg-alt);}

/* ---- Buttons ---- */
.btn{
  display:inline-flex;align-items:center;gap:8px;
  font-family:var(--font-body);font-weight:600;font-size:.95rem;
  padding:14px 28px;border-radius:2px;border:2px solid transparent;
  cursor:pointer;transition:transform .15s ease, background .15s ease;
}
.btn-primary{background:linear-gradient(135deg,var(--copper) 0%,var(--copper-dark) 100%);color:#fff;box-shadow:0 8px 20px var(--copper-glow);}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 12px 26px var(--copper-glow);}
.btn-outline{border-color:var(--white);color:var(--white);}
.btn-outline:hover{background:var(--white);color:var(--ink);transform:translateY(-2px);}
.btn-outline-dark{border-color:var(--ink);color:var(--ink);}
.btn-outline-dark:hover{background:var(--ink);color:#fff;transform:translateY(-2px);}

/* ---- Header ---- */
.site-header{
  position:sticky;top:0;z-index:100;
  background:var(--white);
  border-bottom:1px solid var(--line);
}
.header-inner{
  display:flex;align-items:center;justify-content:space-between;
  padding:16px 24px;max-width:var(--maxw);margin:0 auto;
}
.logo{
  font-family:var(--font-display);font-weight:700;font-size:1.5rem;
  color:var(--ink);letter-spacing:.3px;
}
.logo span{color:var(--copper);}
.nav-links{display:flex;gap:32px;align-items:center;}
.nav-links a{font-weight:600;font-size:.95rem;color:var(--ink-soft);}
.nav-links a:hover, .nav-links a.active{color:var(--copper);}
.nav-cta{
  background:var(--steel);color:#fff;padding:10px 20px;font-weight:600;border-radius:2px;
}
.nav-cta:hover{background:var(--steel-light);color:#fff;}
.nav-toggle{display:none;background:none;border:none;cursor:pointer;padding:8px;}
.nav-toggle span{display:block;width:26px;height:2px;background:var(--ink);margin:6px 0;}

@media (max-width:860px){
  .nav-toggle{display:block;}
  .nav-links{
    position:absolute;top:100%;left:0;right:0;background:var(--white);
    flex-direction:column;align-items:flex-start;gap:0;
    border-bottom:1px solid var(--line);
    max-height:0;overflow:hidden;transition:max-height .25s ease;
  }
  .nav-links.open{max-height:400px;}
  .nav-links a{padding:14px 24px;width:100%;border-top:1px solid var(--line);}
  .nav-cta{margin:14px 24px;}
}

/* ---- Hazard strip (used once, sparingly) ---- */
.hazard-strip{
  height:6px;
  background:repeating-linear-gradient(135deg,var(--amber) 0 18px,var(--graphite) 18px 36px);
}

/* ---- Hero ---- */
.hero{
  background:linear-gradient(160deg,var(--graphite) 0%,var(--steel-dark) 55%,var(--graphite-alt) 100%);
  color:#fff;
  position:relative;
  overflow:hidden;
  padding:100px 0 90px;
}
.hero::before{
  content:"";position:absolute;inset:0;
  background-image:
    linear-gradient(var(--line-dark) 1px,transparent 1px),
    linear-gradient(90deg,var(--line-dark) 1px,transparent 1px);
  background-size:48px 48px;
  opacity:.35;
  mask-image:linear-gradient(to bottom, rgba(0,0,0,.9), transparent 85%);
}
.hero::after{
  content:"";position:absolute;top:-120px;right:-120px;width:480px;height:480px;border-radius:50%;
  background:radial-gradient(circle,var(--copper-glow) 0%,transparent 70%);
  pointer-events:none;
}
.hero-inner{position:relative;display:grid;grid-template-columns:1.2fr .8fr;gap:48px;align-items:end;}
.hero-eyebrow{
  color:var(--copper-light);font-weight:600;font-size:.9rem;
  margin-bottom:18px;display:flex;align-items:center;gap:10px;
}
.hero-eyebrow::before{content:"";width:28px;height:2px;background:var(--copper-light);display:inline-block;}
.hero p.lead{color:#C6CDD6;font-size:1.15rem;max-width:52ch;}
.hero-actions{display:flex;gap:16px;margin-top:28px;flex-wrap:wrap;}
.hero-stats{
  display:grid;grid-template-columns:1fr;gap:20px;
  border-left:2px solid var(--line-dark);padding-left:28px;
}
.hero-stat b{
  font-family:var(--font-display);font-size:2.4rem;color:var(--copper-light);display:block;line-height:1;
}
.hero-stat span{color:#9EA8B4;font-size:.9rem;}
@media (max-width:860px){
  .hero-inner{grid-template-columns:1fr;}
  .hero-stats{border-left:none;border-top:2px solid var(--line-dark);padding-left:0;padding-top:24px;grid-template-columns:repeat(3,1fr);}
}

/* ---- Intro / About snippet ---- */
.split{display:grid;grid-template-columns:1fr 1fr;gap:56px;align-items:center;}
@media (max-width:860px){.split{grid-template-columns:1fr;}}
.figure-box{
  aspect-ratio:4/3;border:2px dashed var(--line);border-radius:var(--radius);
  display:flex;align-items:center;justify-content:center;text-align:center;
  color:var(--ink-soft);font-size:.9rem;padding:20px;background:var(--bg-alt);
}

/* ---- Category / product grid ---- */
.grid-3{display:grid;grid-template-columns:repeat(3,1fr);gap:28px;}
.grid-2{display:grid;grid-template-columns:repeat(2,1fr);gap:28px;}
@media (max-width:960px){.grid-3{grid-template-columns:repeat(2,1fr);}}
@media (max-width:640px){.grid-3,.grid-2{grid-template-columns:1fr;}}

.card{
  background:var(--panel);border:1px solid var(--line);border-radius:var(--radius);
  overflow:hidden;display:flex;flex-direction:column;position:relative;
  transition:transform .2s ease, box-shadow .2s ease, border-color .2s ease;
}
.card::before{
  content:"";position:absolute;top:0;left:0;right:0;height:4px;
  background:linear-gradient(90deg,var(--copper) 0%,var(--copper-light) 100%);
  transform:scaleX(0);transform-origin:left;transition:transform .25s ease;
}
.card:hover{transform:translateY(-6px);box-shadow:var(--shadow-soft);border-color:var(--line);}
.card:hover::before{transform:scaleX(1);}
.card-img{
  aspect-ratio:4/3;background:linear-gradient(135deg,var(--bg-alt) 0%,#DFE3E8 100%);border-bottom:1px solid var(--line);
  display:flex;align-items:center;justify-content:center;text-align:center;
  color:#8A94A0;font-size:.82rem;padding:16px;
}
.card-body{padding:22px;display:flex;flex-direction:column;gap:10px;flex:1;}
.card-body h3{margin:0;}
.card-tag{
  display:inline-block;font-size:.72rem;font-weight:700;letter-spacing:.4px;
  color:var(--copper);text-transform:uppercase;
}
.card-body p{font-size:.92rem;margin:0;}
.card-link{margin-top:auto;font-weight:700;color:var(--steel);font-size:.9rem;}
.card-link:hover{color:var(--copper);}

/* ---- Process steps ---- */
.process{display:grid;grid-template-columns:repeat(5,1fr);gap:0;position:relative;}
@media (max-width:960px){.process{grid-template-columns:repeat(2,1fr);gap:32px;}}
@media (max-width:520px){.process{grid-template-columns:1fr;}}
.process-step{padding:0 20px 0 0;position:relative;}
.process-num{
  font-family:var(--font-display);font-size:2.6rem;color:var(--copper);line-height:1;margin-bottom:10px;
}
.process-step h3{font-size:1.05rem;margin-bottom:6px;}
.process-step p{font-size:.88rem;}

/* ---- Why us list ---- */
.reasons{display:grid;grid-template-columns:repeat(2,1fr);gap:32px 48px;}
@media (max-width:700px){.reasons{grid-template-columns:1fr;}}
.reason{display:flex;gap:16px;align-items:flex-start;}
.reason-mark{
  flex:0 0 auto;width:40px;height:40px;border-radius:50%;
  background:linear-gradient(135deg,var(--steel-light) 0%,var(--steel) 100%);color:#fff;
  display:flex;align-items:center;justify-content:center;
  font-family:var(--font-display);font-weight:700;box-shadow:0 6px 14px rgba(41,67,92,.3);
}
.reason h3{font-size:1.05rem;margin-bottom:4px;}
.reason p{font-size:.9rem;margin:0;}

/* ---- CTA band ---- */
.cta-band{
  background:linear-gradient(120deg,var(--copper) 0%,var(--copper-dark) 100%);color:#fff;padding:56px 0;
  display:flex;justify-content:space-between;align-items:center;gap:24px;flex-wrap:wrap;
}
.cta-band h2{color:#fff;margin:0;font-size:2rem;}
.cta-band p{color:rgba(255,255,255,.85);margin:0;}

/* ---- Footer ---- */
.site-footer{background:var(--graphite);color:#B7BFC9;padding:64px 0 24px;}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1.2fr;gap:40px;}
@media (max-width:860px){.footer-grid{grid-template-columns:1fr 1fr;}}
@media (max-width:520px){.footer-grid{grid-template-columns:1fr;}}
.footer-grid h4{color:#fff;font-family:var(--font-body);font-size:.95rem;text-transform:uppercase;letter-spacing:.5px;margin-bottom:16px;}
.footer-grid a{display:block;padding:6px 0;color:#B7BFC9;font-size:.92rem;}
.footer-grid a:hover{color:var(--copper-light);}
.footer-bottom{
  border-top:1px solid var(--line-dark);margin-top:48px;padding-top:24px;
  display:flex;justify-content:space-between;flex-wrap:wrap;gap:12px;font-size:.82rem;color:#7C8794;
}
.social-row{display:flex;gap:14px;margin-top:10px;}
.social-row a{
  width:36px;height:36px;border:1px solid var(--line-dark);border-radius:50%;
  display:flex;align-items:center;justify-content:center;font-size:.8rem;color:#B7BFC9;
}
.social-row a:hover{border-color:var(--copper);color:var(--copper-light);}

/* ---- Page header (inner pages) ---- */
.page-header{background:linear-gradient(135deg,var(--steel) 0%,var(--steel-dark) 100%);color:#fff;padding:64px 0 48px;position:relative;overflow:hidden;}
.page-header::after{
  content:"";position:absolute;top:-80px;right:-80px;width:320px;height:320px;border-radius:50%;
  background:radial-gradient(circle,var(--copper-glow) 0%,transparent 70%);pointer-events:none;
}
.page-header h1{color:#fff;margin-bottom:8px;font-size:clamp(2rem,4vw,3rem);}
.breadcrumb{font-size:.85rem;color:#CBD5E0;}
.breadcrumb a{color:#CBD5E0;font-weight:600;}
.breadcrumb a:hover{color:#fff;}

/* ---- Spec table ---- */
.spec-table{width:100%;border-collapse:collapse;margin:18px 0;font-size:.92rem;}
.spec-table th,.spec-table td{text-align:left;padding:10px 14px;border-bottom:1px solid var(--line);}
.spec-table th{background:var(--bg-alt);font-family:var(--font-display);font-weight:700;letter-spacing:.3px;}
@media (max-width:600px){
  .spec-table{display:block;overflow-x:auto;white-space:nowrap;-webkit-overflow-scrolling:touch;border:1px solid var(--line);border-radius:var(--radius);}
}

/* ---- FAQ (AEO) ---- */
.faq-item{border-bottom:1px solid var(--line);padding:20px 0;}
.faq-item h3{font-size:1.05rem;margin-bottom:8px;}
.faq-item p{font-size:.92rem;margin:0;}

/* ---- Contact ---- */
.contact-grid{display:grid;grid-template-columns:1fr 1fr;gap:48px;}
@media (max-width:860px){.contact-grid{grid-template-columns:1fr;}}
.contact-info-item{display:flex;gap:16px;margin-bottom:24px;align-items:flex-start;}
.contact-info-item b{display:block;font-family:var(--font-body);color:var(--ink);}
form.contact-form{display:flex;flex-direction:column;gap:16px;}
form.contact-form label{font-size:.85rem;font-weight:600;color:var(--ink-soft);margin-bottom:4px;display:block;}
form.contact-form input,form.contact-form select,form.contact-form textarea{
  width:100%;padding:12px 14px;border:1px solid var(--line);border-radius:2px;font-family:var(--font-body);font-size:.95rem;
}
form.contact-form textarea{min-height:120px;resize:vertical;}
.map-box{border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;height:340px;}
.map-box iframe{width:100%;height:100%;border:0;}

/* ---- Blog ---- */
.blog-card .card-img{font-style:italic;}
.blog-meta{font-size:.78rem;color:var(--ink-soft);text-transform:uppercase;letter-spacing:.3px;}

/* ---- Utility ---- */
.text-center{text-align:center;}
.mx-auto{margin-left:auto;margin-right:auto;}
.mt-0{margin-top:0;}
.tag-list{display:flex;flex-wrap:wrap;gap:10px;margin:18px 0;}
.tag-pill{
  background:var(--bg-alt);border:1px solid var(--line);padding:6px 14px;border-radius:20px;
  font-size:.8rem;font-weight:600;color:var(--ink-soft);
}

/* =========================================================
   RESPONSIVE FINE-TUNING — tablets, small phones, large screens
   ========================================================= */
@media (max-width:1024px){
  .container{padding:0 20px;}
  .section{padding:72px 0;}
  .footer-grid{gap:32px;}
}

@media (max-width:768px){
  .section{padding:56px 0;}
  .section-tight{padding:40px 0;}
  .hero{padding:72px 0 56px;}
  .hero h1{font-size:clamp(2rem,7vw,2.8rem);}
  .cta-band{padding:40px 0;text-align:left;}
  .cta-band .container{flex-direction:column;align-items:flex-start;}
  .page-header{padding:48px 0 36px;}
}

@media (max-width:600px){
  body{font-size:15px;}
  .container{padding:0 18px;}
  .btn{width:100%;justify-content:center;}
  .hero-actions{flex-direction:column;}
  .hero-actions .btn{width:100%;}
  .header-inner{padding:14px 18px;}
  .logo{font-size:1.25rem;}
  .footer-bottom{flex-direction:column;align-items:flex-start;}
  .tag-list{gap:8px;}
  .process-step{padding-right:0;}
}

@media (max-width:420px){
  h1{font-size:2rem;}
  h2{font-size:1.6rem;}
  .hero-stat b{font-size:1.9rem;}
  .card-body{padding:18px;}
}

/* Large-screen comfort cap so content never over-stretches on big monitors/TVs */
@media (min-width:1600px){
  :root{--maxw:1320px;}
  body{font-size:17px;}
}

/* Ensure tap targets stay comfortable on touch devices */
@media (hover:none){
  .nav-links a,.card-link,.btn{min-height:44px;}
  .card:hover{transform:none;} /* avoid stuck hover state on touch */
}